diff options
Diffstat (limited to 'sys/amd64/include/frame.h')
| -rw-r--r-- | sys/amd64/include/frame.h | 40 |
1 files changed, 32 insertions, 8 deletions
diff --git a/sys/amd64/include/frame.h b/sys/amd64/include/frame.h index 5c0dcda..f339f01 100644 --- a/sys/amd64/include/frame.h +++ b/sys/amd64/include/frame.h @@ -34,7 +34,7 @@ * SUCH DAMAGE. * * from: @(#)frame.h 5.2 (Berkeley) 1/18/91 - * $Id: frame.h,v 1.16 1999/04/28 01:03:59 luoqi Exp $ + * $Id: frame.h,v 1.17 1999/05/11 16:29:01 luoqi Exp $ */ #ifndef _MACHINE_FRAME_H_ @@ -158,15 +158,39 @@ struct clockframe { }; /* - * Signal frame + * Signal frame, arguments passed to application signal handlers. */ struct sigframe { - int sf_signum; - int sf_code; - struct sigcontext *sf_scp; - char *sf_addr; - sig_t sf_handler; - struct sigcontext sf_sc; + /* + * The first three members may be used by applications. + */ + + register_t sf_signum; + + /* + * Either 'int' for old-style FreeBSD handler or 'siginfo_t *' + * pointing to sf_siginfo for SA_SIGINFO handlers. + */ + register_t sf_arg2; + + /* Points to sf_siginfo.si_sc. */ + register_t sf_scp; + + /* + * The following arguments are not constrained by the + * function call protocol. + * Applications are not supposed to access these members, + * except using the pointers we provide in the first three + * arguments. + */ + char *sf_addr; + union { + __siginfohandler_t *sf_action; + __sighandler_t *sf_handler; + } sf_ahu; + + /* In the SA_SIGINFO case, sf_arg2 points here. */ + siginfo_t sf_siginfo; }; int kdb_trap __P((int, int, struct trapframe *)); |
